$ git clone -n https://src.fedoraproject.org/rpms/clearsilver.git /var/lib/mock/f45-build-4013-329/root/chroot_tmpdir/scmroot/clearsilver
Cloning into '/var/lib/mock/f45-build-4013-329/root/chroot_tmpdir/scmroot/clearsilver'...
$ git fetch origin a361bb3a7f32f392ec46022075c86841bdd51a4c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/clearsilver
 * [new ref]         a361bb3a7f32f392ec46022075c86841bdd51a4c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a361bb3 Perl 5.44 rebuild