Verified Commit 796625a7 authored by Richard Pospesel's avatar Richard Pospesel Committed by Pier Angelo Vendrame
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Bug 41649: Create rebase and security backport gitlab issue templates

parent 43311546
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<details>
  <summary>Explanation of Variables</summary>
- `$(ESR_VERSION)` : the Mozilla defined ESR version, used in various places for building tor-browser tags, labels, etc
  - example : `102.8.0`
- `$(RR_VERSION)` : the Mozilla defined Rapid-Release version; Tor Browser for Android is based off of the `$(ESR_VERSION)`, but Mozilla's Firefox for Android is based off of the `$(RR_VERSION)` so we need to keep track of security vulnerabilities to backport from the monthly Rapid-Release train and our frozen ESR train.
  - example: `110`
- `$(PROJECT_NAME)` : the name of the browser project, either `base-browser` or `tor-browser`
- `$(TOR_BROWSER_MAJOR)` : the Tor Browser major version
  - example : `12`
- `$(TOR_BROWSER_MINOR)` : the Tor Browser minor version
  - example : either `0` or `5`; Alpha's is always `(Stable + 5) % 10`
- `$(BUILD_N)` : a project's build revision within a its branch; many of the Firefox-related projects have a `$(BUILD_N)` suffix and may differ between projects even when they contribute to the same build.
  - example : `build1`
</details>

**NOTE:** It is assumed the `tor-browser` rebase (stable and alpha) has already happened and there exists a `build1` build tags for both `base-browser` and `tor-browser` (stable and alpha)

### **Bookkeeping**

- [ ] Link this issue to the appropriate [Release Prep](https://gitlab.torproject.org/tpo/applications/tor-browser-build/-/issues/?sort=updated_desc&state=opened&label_name%5B%5D=Release%20Prep) issues (stable and alpha).

### **Security Vulnerabilities Report** : https://www.mozilla.org/en-US/security/advisories/

- Potentially Affected Components:
  - `firefox`/`geckoview` : https://github.com/mozilla/gecko-dev
  - `application-services` : https://github.com/mozilla/application-services
  - `android-components` : https://github.com/mozilla-mobile/firefox-android
  - `fenix` : https://github.com/mozilla-mobile/firefox-android

**NOTE:** `android-components` and `fenix` used to have their own repos, but since November 2022 they have converged to a single `firefox-android` repo. Any backports will require manually porting patches over to our legacy repos.

- [ ] Go through any `Security Vulnerabilities fixed in Firefox $(RR_VERSION)` (or similar) and create a candidate list of CVEs which potentially need to be backported in this issue:
  - CVEs which are explicitly labeled as 'Android' only
  - CVEs which are fixed in Rapid Release but not in ESR
  - 'Memory safety bugs' fixed in Rapid Release but not in ESR
- [ ] Foreach issue:
  - Create link to the CVE on [mozilla.org](https://www.mozilla.org/en-US/security/advisories/)
    - example: https://www.mozilla.org/en-US/security/advisories/mfsa2023-05/#CVE-2023-25740
  - Create link to the associated Bugzilla issues (found in the CVE description)
  - Create links to the relevant `gecko-dev`/other commit hashes which need to be backported OR a brief justification for why the fix does not need to be backported
    - To find the `gecko-dev` version of a `mozilla-central`, search for a unique string in the relevant `mozilla-central` commit message in the `gecko-dev/release` branch log.
    - **NOTE:** This process is unfortunately somewhat poorly defined/ad-hoc given the general variation in how Bugzilla issues are labeled and resolved. In general this is going to involve a bit of hunting to identify needed commits or determining whether or not the fix is relevant.

### CVEs

<!-- CVE Resolution Template, foreach CVE to investigate add an entry in the form:
- [ ] https://www.mozilla.org/en-US/security/advisories/mfsaYYYY-NN/#CVE-YYYY-XXXXX // CVE description
  - https://bugzilla.mozilla.org/show_bug.cgi?id=NNNNNN // Bugzilla issue
  - **Note** : Any relevant info about this fix, justification for why it is not necessary, etc
  - **Patches**
    - firefox-android : https://link.to/relevant/patch
    - firefox : https://link.to/relevant/patch
 -->

### **tor-browser** : https://gitlab.torproject.org/tpo/applications/tor-browser.git
- [ ] Backport any Android-specific security fixes from Firefox rapid-release
  - [ ] Backport patches to `tor-browser` stable branch
  - [ ] Open MR
  - [ ] Merge
  - [ ] Rebase patches onto:
    - [ ] `base-browser` stable
    - [ ] `tor-browser` alpha
    - [ ] `base-browser` alpha
  - [ ] Sign/Tag commits:
    - Tag : `$(PROJECT_NAME)-$(ESR_VERSION)-$(TOR_BROWSER_MAJOR).$(TOR_BROWSER_MINOR)-1-$(BUILD_N)`
    - Message: `Tagging $(BUILD_N) for $(ESR_VERSION)-based alpha)`
    - [ ] `base-browser` stable
    - [ ] `tor-browser` stable
    - [ ] `base-browser` alpha
    - [ ] `tor-browser` alpha
  - [ ] Push tags to `origin`
**OR**
- [ ] No backports

### **application-services** : *TODO: we will need to setup a gitlab copy of this repo that we can apply security backports to if there are ever any security issues here*
- [ ] Backport any Android-specific security fixes from Firefox rapid-release
  - [ ] Backport patches to `application-services` stable branch
  - [ ] Open MR
  - [ ] Merge
  - [ ] Rebase patches onto `application-services` alpha
  - [ ] Sign/Tag commits:
    - Tag : `application-services-$(ESR_VERSION)-$(TOR_BROWSER_MAJOR).$(TOR_BROWSER_MINOR)-1-$(BUILD_N)`
    - Message: `Tagging $(BUILD_N) for $(ESR_VERSION)-based alpha`
    - [ ] `application-services` stable
    - [ ] `application-services` alpha
  - [ ] Push tags to `origin`
  **OR**
- [ ] No backports


### **android-components** : https://gitlab.torproject.org/tpo/applications/android-components.git
- [ ] Backport any Android-specific security fixes from Firefox rapid-release
  - **NOTE**: Since November 2022, this repo has been merged with `fenix` into a singular `firefox-android` repo: https://github.com/mozilla-mobile/firefox-android. Any backport will require a patch rewrite to apply to our legacy `android-components` project.
  - [ ] Backport patches to `android-components` stable branch
  - [ ] Open MR
  - [ ] Merge
  - [ ] Rebase patches onto `android-components` alpha
  - [ ] Sign/Tag commits:
    - Tag : `android-components-$(ESR_VERSION)-$(TOR_BROWSER_MAJOR).$(TOR_BROWSER_MINOR)-1-$(BUILD_N)`
    - Message: `Tagging $(BUILD_N) for $(ESR_VERSION)-based alpha)`
    - [ ] `android-components` stable
    - [ ] `android-components` alpha
  - [ ] Push tags to `origin`
**OR**
- [ ] No backports


### **fenix** : https://gitlab.torproject.org/tpo/applications/fenix.git
- [ ] Backport any Android-specific security fixes from Firefox rapid-release
  - **NOTE**: Since February 2023, this repo has been merged with `android-components` into a singular `firefox-android` repo: https://github.com/mozilla-mobile/firefox-android. Any backport will require a patch rewrite to apply to our legacy `fenix` project.
  - [ ] Backport patches to `fenix` stable branch
  - [ ] Open MR
  - [ ] Merge
  - [ ] Rebase patches onto `fenix` alpha
  - [ ] Sign/Tag commits:
    - Tag : `tor-browser-$(ESR_VERSION)-$(TOR_BROWSER_MAJOR).$(TOR_BROWSER_MINOR)-1-$(BUILD_N)`
    - Message: `Tagging $(BUILD_N) for $(ESR_VERSION)-based alpha)`
    - [ ] `fenix` stable
    - [ ] `fenix` alpha
  - [ ] Push tags to `origin`
**OR**
- [ ] No backports

/confidential
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Original line number Diff line number Diff line
**NOTE:** All examples reference the rebase from 102.7.0esr to 102.8.0esr

<details>
  <summary>Explanation of Variables</summary>
- `$(ESR_VERSION)` : the Mozilla defined ESR version, used in various places for building tor-browser tags, labels, etc
  - example : `102.8.0`
- `$(ESR_TAG)` : the Mozilla defined hg (Mercurial) tag associated with `$(ESR_VERSION)`
  - example : `FIREFOX_102_8_0esr_RELEASE`
- `$(ESR_TAG_PREV)` : the Mozilla defined hg (Mercurial) tag associated with the previous ESR version when rebasing (ie, the ESR version we are rebasing from)
- `$(BROWSER_MAJOR)` : the browser major version
  - example : `12`
- `$(BROWSER_MINOR)` : the browser minor version
  - example : either `0` or `5`; Alpha's is always `(Stable + 5) % 10`
- `$(BASE_BROWSER_BRANCH)` : the full name of the current `base-browser` branch
  - example: `base-browser-102.8.0esr-12.5-1`
- `$(BASE_BROWSER_BRANCH_PREV)` : the full name of the previous `base-browser` branch
  - example: `base-browser-102.7.0esr-12.5-1`
- `$(TOR_BROWSER_BRANCH)` : the full name of the current `tor-browser` branch
  - example: `tor-browser-102.8.0esr-12.5-1`
- `$(TOR_BROWSER_BRANCH_PREV)` : the full name of the previous `tor-browser` branch
  - example: `tor-browser-102.7.0esr-12.5-1`
</details>

**NOTE:** It is assumed that we've already identified the new esr branch during the tor-browser stable rebase

### **Bookkeeping**

- [ ] Link this issue to the appropriate [Release Prep](https://gitlab.torproject.org/tpo/applications/tor-browser-build/-/issues/?sort=updated_desc&state=opened&label_name%5B%5D=Release%20Prep) issue.

### Update Branch Protection Rules

- [ ] In [Repository Settings](https://gitlab.torproject.org/tpo/applications/tor-browser/-/settings/repository):
  - [ ] Remove previous alpha `base-browser` and `tor-browser` branch protection rules (this will prevent pushing new changes to the branches being rebased)
  - [ ] Create new `base-browser` and `tor-browser` branch protection rule:
    - **Branch**: `*-$(ESR_VERSION)esr-$(BROWSER_MAJOR).$(BROWSER_MINOR)-1*`
      - example: `*-102.8.0esr-12.5-1*`
    - **Allowed to merge**: `Maintainers`
    - **Allowed to push and merge**: `Maintainers`
    - **Allowed to force push**: `false`

### **Create New Branches**

- [ ] Create new alpha `base-browser` branch from Firefox mercurial tag (found during the stable rebase)
  - branch name in the form: `base-browser-$(ESR_VERSION)esr-$(BROWSER_MAJOR).$(BROWSER_MINOR)-1`
  - example: `base-browser-102.8.0esr-12.5-1`
- [ ] Create new alpha `tor-browser` branch from Firefox mercurial tag
  - branch name in the form: `tor-browser-$(ESR_VERSION)esr-$(BROWSER_MAJOR).$(BROWSER_MINOR)-1`
  - example: `tor-browser-102.8.0esr-12.5-1`
- [ ] Push new `base-browser` branch to `origin`
- [ ] Push new `tor-browser` branch to `origin`

### **Rebase base-browser**

- [ ] Checkout a new local branch for the `base-browser` rebase
  - example: `git branch base-browser-rebase FIREFOX_102_8_0esr_BUILD1`
- [ ] Cherry-pick the previous `base-browser` commits up to `base-browser`'s `build1` tag onto new `base-browser` rebase branch
  - example: `git cherry-pick FIREFOX_102_7_0esr_BUILD1..base-browser-102.7.0esr-12.5-1-build1`
- [ ] Rebase and autosquash these cherry-picked commits
  - example: `git rebase --autosquash --interactive FIREFOX_102_8_0esr_BUILD1 HEAD`
  - [ ] **(Optional)** Patch reordering
    - Relocate new `base-browser` patches in the patch-set to enforce this rough thematic ordering:
      - **MOZILLA BACKPORTS** - official Firefox patches we have backported to our ESR branch: Android-specific security updates, critical bug fixes, worthwhile features, etc
      - **MOZILLA REVERTS** - revert commits of official Firefox patches
      - **UPLIFT CANDIDATES** - patches which stand on their own and should be uplifted to `mozilla-central`
      - **BUILD CONFIGURATION** - tools/scripts, gitlab templates, etc
      - **BROWSER CONFIGURATION** - branding, mozconfigs, preference overrides, etc
      - **SECURITY PATCHES** - security improvements, hardening, etc
      - **PRIVACY PATCHES** - fingerprinting, linkability, proxy bypass, etc
      - **FEATURES** - new functionality: updater, UX, letterboxing, security level, add-on integration, etc
- [ ] Cherry-pick remainder of patches after the `build1` tag
  - example: `git cherry-pick base-browser-102.7.0esr-12.5-1-build1 origin/base-browser-102.7.0esr-12.5-1`
- [ ] Compare patch sets to ensure nothing *weird* happened during conflict resolution:
  - [ ] diff of diffs:
    -  Do the diff between `current_patchset.diff` and `rebased_patchset.diff` with your preferred difftool and look at differences on lines that starts with + or -
    - `git diff $(ESR_TAG_PREV)..$(BASE_BROWSER_BRANCH_PREV) > current_patchset.diff`
    - `git diff $(ESR_TAG)..$(BASE_BROWSER_BRANCH) > rebased_patchset.diff`
    - diff `current_patchset.diff` and `rebased_patchset.diff`
      - If everything went correctly, the only lines which should differ should be the lines starting with `index abc123...def456`
  - [ ] rangediff: `git range-diff $(ESR_TAG_PREV)..$(BASE_BROWSER_BRANCH_PREV) $(ESR_TAG)..HEAD`
    - example: `git range-dif FIREFOX_102_7_0esr_BUILD1..origin/base-browser-102.7.0esr-12.5-1 FIREFOX_102_8_0esr_BUILD1..HEAD`
- [ ] Open MR for the `base-browser` rebase
- [ ] Merge
- [ ] Sign/Tag HEAD of the merged new `base-browser` branch:
  - Tag : `base-browser-$(ESR_VERSION)esr-$(BROWSER_MAJOR).$(BROWSER_MINOR)-1-build1`
  - Message : `Tagging build1 for $(ESR_VERSION)esr-based alpha`
- [ ] Push tag to `origin`

### **Rebase tor-browser**

- [ ] Checkout a new branch for the `tor-browser` rebase starting from the `base-browser` `build1` tag
  - example: `git branch tor-browser-rebase base-browser-102.8.0esr-12.5-1-build1`
- [ ] Cherry-pick the previous `tor-browser` commits from `base-browser`'s previous `build1` tag up to `tor-browser`'s newest `buildN` tag (not necessarily `build1` if we have multiple build tags)
  - example: `git cherry-pick base-browser-102.7.0esr-12.5-1-build1..tor-browser-102.7.0esr-12.5-1-build1`
- [ ] Rebase and autosquash these cherry-picked commits (from the last new `base-browser` commit to `HEAD`)
  - example: `git rebase --autosquash --interactive base-browser-102.8.0esr-12.5-1-build1 HEAD`
  - [ ] **(Optional)** Patch reordering
    - Relocate new `tor-browser` patches in the patch-set to enforce this rough thematic ordering:
      - **BUILD CONFIGURATION** - tools/scripts, gitlab templates, etc
      - **BROWSER CONFIGURATION** - branding, mozconfigs, preference overrides, etc
      - **UPDATER PATCHES** - updater tweaks, signing keys, etc
      - **SECURITY PATCHES** - non tor-dependent security improvements, hardening, etc
      - **PRIVACY PATCHES** - non tor-dependent fingerprinting, linkability, proxy bypass, etc
      - **FEAURES** - non tor-dependent features
      - **TOR INTEGRATION** - legacy tor-launcher/torbutton, tor modules, bootstrapping, etc
      - **TOR SECURITY PATCHES** - tor-specific security improvements
      - **TOR PRIVACY PATCHES** - tor-specific privacy improvements
      - **TOR FEATURES** - new tor-specific functionality: manual, onion-location, onion service client auth, etc
- [ ] Cherry-pick remainder of patches after the last `buildN` tag
  - example: `git cherry-pick base-browser-102.7.0esr-12.5-1-build1..origin/tor-browser-102.7.0esr-12.5-1`
- [ ] Rebase and autosquash again (from the last new `base-browser` commit to `HEAD`), this time replacing all `fixup` and `squash` commands with `pick`. The goal here is to have all of the `fixup` and `squash` commits beside the commit which they modify.
  - example: `git rebase --autosquash --interactive base-browser-102.8.0esr-12.5-1-build1 HEAD`
  - **NOTE**: Do not allow `fixup` or `squash` commands here!
- [ ] Compare patch sets to ensure nothing *weird* happened during conflict resolution:
  - [ ] diff of diffs:
    -  Do the diff between `current_patchset.diff` and `rebased_patchset.diff` with your preferred difftool and look at differences on lines that starts with + or -
    - `git diff $(ESR_TAG_PREV)..$(BROWSER_BRANCH_PREV) > current_patchset.diff`
    - `git diff $(ESR_TAG)..$(BROWSER_BRANCH) > rebased_patchset.diff`
    - diff `current_patchset.diff` and `rebased_patchset.diff`
      - If everything went correctly, the only lines which should differ should be the lines starting with `index abc123...def456` (unless the previous `base-browser` branch includes changes not included in the previous `tor-browser` branch)
  - [ ] rangediff: `git range-diff $(ESR_TAG_PREV)..$(TOR_BROWSER_BRANCH_PREV) $(ESR_TAG)..HEAD`
    - example: `git range-dif FIREFOX_102_7_0esr_BUILD1..origin/tor-browser-102.7.0esr-12.5-1 FIREFOX_102_8_0esr_BUILD1..HEAD`
- [ ] Open MR for the `tor-browser` rebase
- [ ] Merge
- [ ] Sign/Tag HEAD of the merged new `tor-browser` branch:
  - Tag : `tor-browser-$(ESR_VERSION)esr-$(BROWSER_MAJOR).$(BROWSER_MINOR)-1-build1`
  - Message : `Tagging build1 for $(ESR_VERSION)esr-based alpha`
- [ ] Push tag to `origin`
+111 −0
Original line number Diff line number Diff line
**NOTE:** All examples reference the rebase from 102.7.0esr to 102.8.0esr

<details>
  <summary>Explanation of variables</summary>
- `$(ESR_VERSION)` : the Mozilla defined ESR version, used in various places for building tor-browser tags, labels, etc
  - example : `102.8.0`
- `$(ESR_TAG)` : the Mozilla defined hg (Mercurial) tag associated with `$(ESR_VERSION)`
  - example : `FIREFOX_102_8_0esr_RELEASE`
- `$(ESR_TAG_PREV)` : the Mozilla defined hg (Mercurial) tag associated with the previous ESR version when rebasing (ie, the ESR version we are rebasing from)
- `$(BROWSER_MAJOR)` : the browser major version
  - example : `12`
- `$(BROWSER_MINOR)` : the browser minor version
  - example : either `0` or `5`; Alpha's is always `(Stable + 5) % 10`
- `$(BASE_BROWSER_BRANCH)` : the full name of the current `base-browser` branch
  - example: `base-browser-102.8.0esr-12.0-1`
- `$(BASE_BROWSER_BRANCH_PREV)` : the full name of the previous `base-browser` branch
  - example: `base-browser-102.7.0esr-12.0-1`
- `$(TOR_BROWSER_BRANCH)` : the full name of the current `tor-browser` branch
  - example: `tor-browser-102.8.0esr-12.0-1`
- `$(TOR_BROWSER_BRANCH_PREV)` : the full name of the previous `tor-browser` branch
  - example: `tor-browser-102.7.0esr-12.0-1`
</details>

### **Bookkeeping**

- [ ] Link this issue to the appropriate [Release Prep](https://gitlab.torproject.org/tpo/applications/tor-browser-build/-/issues/?sort=updated_desc&state=opened&label_name%5B%5D=Release%20Prep) issue.

### Update Branch Protection Rules

- [ ] In [Repository Settings](https://gitlab.torproject.org/tpo/applications/tor-browser/-/settings/repository):
  - [ ] Remove previous stable `base-browser` and `tor-browser` branch protection rules (this will prevent pushing new changes to the branches being rebased)
  - [ ] Create new `base-browser` and `tor-browser` branch protection rule:
    - **Branch**: `*-$(ESR_VERSION)esr-$(BROWSER_MAJOR).$(BROWSER_MINOR)-1*`
      - example: `*-102.8.0esr-12.0-1*`
    - **Allowed to merge**: `Maintainers`
    - **Allowed to push and merge**: `Maintainers`
    - **Allowed to force push**: `false`

### **Identify the Firefox Tagged Commit and Create New Branches**

- [ ] Find the Firefox mercurial tag here : https://hg.mozilla.org/releases/mozilla-esr102/tags
   - example: `FIREFOX_102_8_0esr_BUILD1`
- [ ] Find the analogous `gecko-dev` commit : https://github.com/mozilla/gecko-dev
  - Search for unique string found in the mercurial commit in the `gecko-dev/esr102` branch
  - example: 3a3a96c9eedd02296d6652dd50314fccbc5c4845
- [ ] Sign and Tag `gecko-dev` commit
  - Sign/Tag `gecko-dev` commit :
    - Tag : `$(ESR_TAG)`
    - Message : `Hg tag $(ESR_TAG)`
- [ ] Create new stable `base-browser` branch from tag
  - branch name in the form: `base-browser-$(ESR_VERSION)esr-$(BROWSER_MAJOR).$(BROWSER_MINOR)-1`
  - example: `base-browser-102.8.0esr-12.0-1`
- [ ] Create new stable `tor-browser` branch from
  - branch name in the form: `tor-browser-$(ESR_VERSION)esr-$(BROWSER_MAJOR).$(BROWSER_MINOR)-1`
  - example: `tor-browser-102.8.0esr-12.0-1`
- [ ] Push new `base-browser` branch to `origin`
- [ ] Push new `tor-browser` branch to `origin`
- [ ] Push new `$(ESR_TAG)` to `origin`

### **Rebase base-browser**

- [ ] Checkout a new local branch for the `base-browser` rebase
  - example: `git branch base-browser-rebase FIREFOX_102_8_0esr_BUILD1`
- [ ] Cherry-pick the previous `base-browser` commits up to `base-browser`'s `build1` tag onto new `base-browser` rebase branch
  - example: `git cherry-pick FIREFOX_102_7_0esr_BUILD1..base-browser-102.7.0esr-12.0-1-build1`
- [ ] Rebase and autosquash these cherry-picked commits
  - example: `git rebase --autosquash --interactive FIREFOX_102_8_0esr_BUILD1 HEAD`
- [ ] Cherry-pick remainder of patches after the `build1` tag
  - example: `git cherry-pick base-browser-102.7.0esr-12.0-1-build1 origin/base-browser-102.7.0esr-12.0-1`
- [ ] Compare patch sets to ensure nothing *weird* happened during conflict resolution:
  - [ ] diff of diffs:
    -  Do the diff between `current_patchset.diff` and `rebased_patchset.diff` with your preferred difftool and look at differences on lines that starts with + or -
    - `git diff $(ESR_TAG_PREV)..$(BASE_BROWSER_BRANCH_PREV) > current_patchset.diff`
    - `git diff $(ESR_TAG)..$(BASE_BROWSER_BRANCH) > rebased_patchset.diff`
    - diff `current_patchset.diff` and `rebased_patchset.diff`
      - If everything went correctly, the only lines which should differ should be the lines starting with `index abc123...def456`
  - [ ] rangediff: `git range-diff $(ESR_TAG_PREV)..$(BASE_BROWSER_BRANCH_PREV) $(ESR_TAG)..HEAD`
    - example: `git range-dif FIREFOX_102_7_0esr_BUILD1..origin/base-browser-102.7.0esr-12.0-1 FIREFOX_102_8_0esr_BUILD1..HEAD`
- [ ] Open MR for the `base-browser` rebase
- [ ] Merge
- [ ] Sign/Tag HEAD of the merged new `base-browser` branch:
  - Tag : `base-browser-$(ESR_VERSION)esr-$(BROWSER_MAJOR).$(BROWSER_MINOR)-1-build1`
  - Message : `Tagging build1 for $(ESR_VERSION)esr-based stable`
- [ ] Push tag to `origin`


### **Rebase tor-browser**

- [ ] Checkout a new branch for the `tor-browser` rebase starting from the `base-browser` `build1` tag
  - example: `git branch tor-browser-rebase base-browser-102.8.0esr-12.0-1-build1`
- [ ] Cherry-pick the previous `tor-browser` commits from `base-browser`'s previous `build1` tag up to `tor-browser`'s newest `buildN` tag (not necessarily `build1` if we have multiple build tags)
  - example: `git cherry-pick base-browser-102.7.0esr-12.0-1-build1..tor-browser-102.7.0esr-12.0-1-build1`
- [ ] Rebase and autosquash these cherry-picked commits (from the last new `base-browser` commit to `HEAD`)
  - example: `git rebase --autosquash --interactive base-browser-102.8.0esr-12.0-1-build1 HEAD`
- [ ] Cherry-pick remainder of patches after the last `buildN` tag
  - example: `git cherry-pick base-browser-102.7.0esr-12.0-1-build1..origin/tor-browser-102.7.0esr-12.0-1`
- [ ] Compare patch sets to ensure nothing *weird* happened during conflict resolution:
  - [ ] diff of diffs:
    -  Do the diff between `current_patchset.diff` and `rebased_patchset.diff` with your preferred difftool and look at differences on lines that starts with + or -
    - `git diff $(ESR_TAG_PREV)..$(BROWSER_BRANCH_PREV) > current_patchset.diff`
    - `git diff $(ESR_TAG)..$(BROWSER_BRANCH) > rebased_patchset.diff`
    - diff `current_patchset.diff` and `rebased_patchset.diff`
      - If everything went correctly, the only lines which should differ should be the lines starting with `index abc123...def456` (unless the previous `base-browser` branch includes changes not included in the previous `tor-browser` branch)
  - [ ] rangediff: `git range-diff $(ESR_TAG_PREV)..$(TOR_BROWSER_BRANCH_PREV) $(ESR_TAG)..HEAD`
    - example: `git range-dif FIREFOX_102_7_0esr_BUILD1..origin/tor-browser-102.7.0esr-12.0-1 FIREFOX_102_8_0esr_BUILD1..HEAD`
- [ ] Open MR for the `tor-browser` rebase
- [ ] Merge
- [ ] Sign/Tag HEAD of the merged new `tor-browser` branch:
  - Tag : `tor-browser-$(ESR_VERSION)esr-$(BROWSER_MAJOR).$(BROWSER_MINOR)-1-build1`
  - Message : `Tagging build1 for $(ESR_VERSION)esr-based stable`
- [ ] Push tag to `origin`