$ git clone -n https://src.fedoraproject.org/rpms/python-streamlink.git /var/lib/mock/f40-build-2232104-53321/root/chroot_tmpdir/scmroot/python-streamlink
Cloning into '/var/lib/mock/f40-build-2232104-53321/root/chroot_tmpdir/scmroot/python-streamlink'...
$ git fetch origin 30ff701fd86be62717a4eac846023a014170a512:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-streamlink
 * [new ref]         30ff701fd86be62717a4eac846023a014170a512 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 30ff701 Update to 6.4.2