$ git clone -n https://src.fedoraproject.org/rpms/kf5-messagelib.git /var/lib/mock/f39-build-1676981-40954/root/chroot_tmpdir/scmroot/kf5-messagelib
Cloning into '/var/lib/mock/f39-build-1676981-40954/root/chroot_tmpdir/scmroot/kf5-messagelib'...
$ git fetch origin 1a695585d4d6518eb278e7aff2b73d08c267eb84:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-messagelib
 * [new ref]         1a695585d4d6518eb278e7aff2b73d08c267eb84 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1a69558 23.08.2