Rename release workflows and correct commands (#928)

The `[` character is sorted after alphabetical ones, so use `(` instead
to try to keep the workflows at the top of the list.

Additionally, add missing double quotes to the run commands and increase
the fetch depth to fetch all history in order to find the branch points.

Author: dcandler

.github/workflows/create_arm_release_branch.yml

@@ -7,7 +7,7 @@
 # The branch should be created at the commit where the upstream branch
 # point was merged on to the arm-software branch.
 
-name: "[arm-toolchain] Create arm-toolchain Release Branch"
+name: "(arm-toolchain) Create arm-toolchain Release Branch"
 on:
   workflow_dispatch:
     inputs:
@@ -30,6 +30,7 @@ jobs:
         uses: actions/checkout@v6
         with:
           token: ${{ steps.generate-token.outputs.token }}
+          fetch-depth: 0
       - name: Configure Git Identity
         run: |
           git config --local user.name "github-actions[bot]"
@@ -42,8 +43,9 @@ jobs:
       - name: Create Branch
         run: |
           llvmbranchpoint=$(git merge-base remotes/llvm/main remotes/llvm/release/${{ inputs.release-version }}.x)
-          armbranchpoint=$(git rev-list --reverse --ancestry-path --min-parents=2 $llvmbranchpoint..arm-software | head -n 1)
-          if echo $armbranchpoint | grep "[0-9a-z]\{40\}"; then
+          echo "release/${{ inputs.release-version }}.x branched at $llvmbranchpoint"
+          armbranchpoint=$(git rev-list --reverse --ancestry-path --min-parents=2 "$llvmbranchpoint"..arm-software | head -n 1)
+          if echo "$armbranchpoint" | grep "[0-9a-z]\{40\}"; then
             echo "Branching release/arm-software/${{ inputs.release-version }}.x at $armbranchpoint"
           else
             echo "Unexpected git rev-list result: $armbranchpoint"

.github/workflows/create_llvm_release_branch.yml

@@ -5,7 +5,7 @@
 
 # This workflow creates a branch to mirror an upstream LLVM release branch.
 
-name: "[arm-toolchain] Create LLVM Release Branch"
+name: "(arm-toolchain) Create LLVM Release Branch"
 on:
   workflow_dispatch:
     inputs: