$ git clone -n https://src.fedoraproject.org/rpms/kgpg.git /var/lib/mock/f39-test-2568144-62207/root/chroot_tmpdir/scmroot/kgpg
Cloning into '/var/lib/mock/f39-test-2568144-62207/root/chroot_tmpdir/scmroot/kgpg'...
$ git fetch origin d6d6b95de79b0a1a4ea7aba7046ed780976a2b65:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kgpg
 * [new ref]         d6d6b95de79b0a1a4ea7aba7046ed780976a2b65 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d6d6b95 23.08.5