$ git clone -n https://src.fedoraproject.org/rpms/kdf.git /var/lib/mock/f39-build-1503571-34977/root/chroot_tmpdir/scmroot/kdf
Cloning into '/var/lib/mock/f39-build-1503571-34977/root/chroot_tmpdir/scmroot/kdf'...
$ git fetch origin 27d5fbde1999b0c7b80394a627909f1279bac422:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kdf
 * [new ref]         27d5fbde1999b0c7b80394a627909f1279bac422 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 27d5fbd 23.08.2