$ git clone -n https://src.fedoraproject.org/rpms/clutter-gst3.git /var/lib/mock/f41-build-side-1-2633177-25899/root/chroot_tmpdir/scmroot/clutter-gst3
Cloning into '/var/lib/mock/f41-build-side-1-2633177-25899/root/chroot_tmpdir/scmroot/clutter-gst3'...
$ git fetch origin 80e36a45abbf0f308bfc66c009f1bbd1202464cb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/clutter-gst3
 * [new ref]         80e36a45abbf0f308bfc66c009f1bbd1202464cb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 80e36a4 convert license to SPDX