$ git clone -n https://src.fedoraproject.org/rpms/pl.git /var/lib/mock/f41-build-854599-166904/root/chroot_tmpdir/scmroot/pl
Cloning into '/var/lib/mock/f41-build-854599-166904/root/chroot_tmpdir/scmroot/pl'...
$ git fetch origin ef360ff83a35046618a110bbdc37fd3491a24ca2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pl
 * [new ref]         ef360ff83a35046618a110bbdc37fd3491a24ca2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ef360ff Fix swi-prolog-java FTI (rhbz#2313232)