$ git clone -n https://src.fedoraproject.org/rpms/bliss.git /var/lib/mock/f40-build-791668-137678/root/chroot_tmpdir/scmroot/bliss
Cloning into '/var/lib/mock/f40-build-791668-137678/root/chroot_tmpdir/scmroot/bliss'...
$ git fetch origin 3a843bd252e2bd89f59692d6f80de375dc4f5537:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bliss
 * [new ref]         3a843bd252e2bd89f59692d6f80de375dc4f5537 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3a843bd Build the SCIP fork