$ git clone -n https://src.fedoraproject.org/rpms/blender.git /var/lib/mock/f38-build-720785-97918/root/chroot_tmpdir/scmroot/blender
Cloning into '/var/lib/mock/f38-build-720785-97918/root/chroot_tmpdir/scmroot/blender'...
$ git fetch origin 29b9bc5cae694bb37b626bdda577c114c48034c6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/blender
 * [new ref]         29b9bc5cae694bb37b626bdda577c114c48034c6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 29b9bc5 Rebuild for dracon 1.5.6