$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-digraphs.git /var/lib/mock/f40-build-2693745-69023/root/chroot_tmpdir/scmroot/gap-pkg-digraphs
Cloning into '/var/lib/mock/f40-build-2693745-69023/root/chroot_tmpdir/scmroot/gap-pkg-digraphs'...
$ git fetch origin 7f9b18d6d4fc331ded3c150c7e7b1527a6697b31:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-digraphs
 * [new ref]         7f9b18d6d4fc331ded3c150c7e7b1527a6697b31 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7f9b18d Version 1.7.1