$ git clone -n https://src.fedoraproject.org/rpms/kgpg.git /var/lib/mock/f39-build-2080848-49727/root/chroot_tmpdir/scmroot/kgpg
Cloning into '/var/lib/mock/f39-build-2080848-49727/root/chroot_tmpdir/scmroot/kgpg'...
$ git fetch origin de99bee33394fa8a09ab67c13ad73bc4e72c014e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kgpg
 * [new ref]         de99bee33394fa8a09ab67c13ad73bc4e72c014e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at de99bee 23.08.4