$ git clone -n https://src.fedoraproject.org/rpms/pack.git /var/lib/mock/f39-build-1461777-33283/root/chroot_tmpdir/scmroot/pack
Cloning into '/var/lib/mock/f39-build-1461777-33283/root/chroot_tmpdir/scmroot/pack'...
$ git fetch origin 841bd81a9cbf243a902f922408ea980ebe3f56e5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pack
 * [new ref]         841bd81a9cbf243a902f922408ea980ebe3f56e5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 841bd81 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild