$ git clone -n https://src.fedoraproject.org/rpms/python-archspec.git /var/lib/mock/f40-build-2245829-53787/root/chroot_tmpdir/scmroot/python-archspec
Cloning into '/var/lib/mock/f40-build-2245829-53787/root/chroot_tmpdir/scmroot/python-archspec'...
$ git fetch origin 73c22dd936b1db92d9c16be6c1e87a26beb61cab:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-archspec
 * [new ref]         73c22dd936b1db92d9c16be6c1e87a26beb61cab -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 73c22dd Initial import