$ git clone -n https://src.fedoraproject.org/rpms/plexus-archiver.git /var/lib/mock/f41-build-1139280-20898/root/chroot_tmpdir/scmroot/plexus-archiver
Cloning into '/var/lib/mock/f41-build-1139280-20898/root/chroot_tmpdir/scmroot/plexus-archiver'...
$ git fetch origin b55303ae510f800a7d67e80122afb6c52d375717:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plexus-archiver
 * [new ref]         b55303ae510f800a7d67e80122afb6c52d375717 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b55303a Rebuilt for java-21-openjdk as system jdk