$ git clone -n https://src.fedoraproject.org/rpms/libloc.git /var/lib/mock/f41-build-813777-148788/root/chroot_tmpdir/scmroot/libloc
Cloning into '/var/lib/mock/f41-build-813777-148788/root/chroot_tmpdir/scmroot/libloc'...
$ git fetch origin f72c0cc8bfcbd076b4124dcdcd56a4417e89f18a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libloc
 * [new ref]         f72c0cc8bfcbd076b4124dcdcd56a4417e89f18a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f72c0cc Perl 5.40 rebuild