$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-digraphs.git /var/lib/mock/f41-build-side-1-2951828-35498/root/chroot_tmpdir/scmroot/gap-pkg-digraphs
Cloning into '/var/lib/mock/f41-build-side-1-2951828-35498/root/chroot_tmpdir/scmroot/gap-pkg-digraphs'...
$ git fetch origin 840f89b982f4e1e5f4f85ae97320abfe7189faa7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-digraphs
 * [new ref]         840f89b982f4e1e5f4f85ae97320abfe7189faa7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 840f89b Version 1.9.0