$ git clone -n https://src.fedoraproject.org/rpms/javassist.git /var/lib/mock/f38-build-side-42-init-devel-1205498-30632/root/chroot_tmpdir/scmroot/javassist
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1205498-30632/root/chroot_tmpdir/scmroot/javassist'...
$ git fetch origin 0b060cd64f62283f4f459f66377ae11d6a7d9736:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/javassist
 * [new ref]         0b060cd64f62283f4f459f66377ae11d6a7d9736 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0b060cd Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild