Using a git recipe with a branch name that contains a forward slash results in the following error:
"unknown revision or path not in the working tree"

The following sample recipe shows an example with branch name "debian/latest":
# git-build-recipe format 0.4 deb-version 2.13.0+dfsg-1
lp:~reviczky/freetype/+git/freetype-debian debian/latest

The error message is as follows:
RUN ['git-build- recipe' , '--safe', '--no-build', '--manifest', '/home/ buildd/ build-RECIPEBRA NCHBUILD- 3580935/ chroot- autobuild/ home/buildd/ work/tree/ manifest' , '--distribution', 'mantic', '--allow- fallback- to-native' , '--append-version', '~ubuntu23.10.1', '/home/ buildd/ build-RECIPEBRA NCHBUILD- 3580935/ chroot- autobuild/ home/buildd/ work/recipe' , '/home/ buildd/ build-RECIPEBRA NCHBUILD- 3580935/ chroot- autobuild/ home/buildd/ work/tree' ]
fatal: ambiguous argument '691a63d7074836 2fc9bd84071e018 5c1013b4c0f^ {tree}' : unknown revision or path not in the working tree.
Use '--' to separate paths from revisions, like this:
'git <command> [<revision>...] -- [<file>...]'
fatal: not a valid object name: 691a63d70748362 fc9bd84071e0185 c1013b4c0f^ {tree}
tar: This does not look like a tar archive
tar: Exiting with failure status due to previous errors
pristine-tar: command failed: git archive --format=tar 691a63d70748362 fc9bd84071e0185 c1013b4c0f\ ^\{tree\ } | (cd '/tmp/pristine- tar.aYn9udOVNS' && tar x)
/usr/lib/ python3/ dist-packages/ debian/ changelog. py:484: UserWarning: Found eof where expected first heading
warnings. warn(message)
Initialized empty Git repository in /home/buildd/ build-RECIPEBRA NCHBUILD- 3580935/ chroot- autobuild/ home/buildd/ work/tree/ recipe/ .git/
From https:/ /git.launchpad. net/~reviczky/ freetype/ +git/freetype- debian
* [new branch] debian/bullseye -> source/ debian/ bullseye
* [new branch] debian/buster -> source/ debian/ buster
* [new branch] debian/latest -> source/ debian/ latest
* [new branch] debian/stretch -> source/ debian/ stretch
* [new branch] pristine-tar -> source/pristine-tar
* [new branch] upstream/latest -> source/ upstream/ latest
* [new tag] debian/ 2.6.3-3. 2+deb9u1 -> debian/ 2.6.3-3. 2+deb9u1
* [new tag] debian/ 2.6.3-3. 2+deb9u2 -> debian/ 2.6.3-3. 2+deb9u2
* [new tag] debian/ 2.9.1-3+ deb10u1 -> debian/ 2.9.1-3+ deb10u1
* [new tag] debian/ 2.9.1-3+ deb10u2 -> debian/ 2.9.1-3+ deb10u2
Note: switching to '31b669dbb7b420 de1d2b8fa16ea36 0e816ceebc2' .

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by switching back to a branch.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -c with the switch command. Example:

git switch -c <new-branch-name>

Or undo this operation with:

git switch -

Turn off this advice by setting config variable advice.detachedHead to false

HEAD is now at 31b669db debian/changelog: Update for FreeType Debian release 2.13.0+dfsg-1
Traceback (most recent call last):
File "/bin/git- build-recipe" , line 11, in <module>
load_ entry_point( 'git-build- recipe= =0.1', 'console_scripts', 'git-build- recipe' )()
File "/usr/lib/ python3/ dist-packages/ gitbuildrecipe/ main.py" , line 162, in main
extract_ upstream_ tarball(
File "/usr/lib/ python3/ dist-packages/ gitbuildrecipe/ deb_util. py", line 71, in extract_ upstream_ tarball
subprocess. check_call(
File "/usr/lib/ python3. 8/subprocess. py", line 364, in check_call
raise CalledProcessEr ror(retcode, cmd)
subprocess. CalledProcessEr ror: Command '['pristine-tar', 'checkout', '/home/ buildd/ build-RECIPEBRA NCHBUILD- 3580935/ chroot- autobuild/ home/buildd/ work/tree/ freetype_ 2.13.0+ dfsg.orig. tar.xz' ]' returned non-zero exit status 2.
RUN: /usr/share/ launchpad- buildd/ bin/in- target scan-for-processes --backend=chroot --series=mantic --arch=amd64 RECIPEBRANCHBUI LD-3580935
Scanning for processes to kill in build RECIPEBRANCHBUI LD-3580935

Full log: https:/ /launchpadlibra rian.net/ 679607707/ buildlog. txt.gz