$ git clone -n https://src.fedoraproject.org/rpms/blender.git /var/lib/mock/f39-build-1661251-40658/root/chroot_tmpdir/scmroot/blender
Cloning into '/var/lib/mock/f39-build-1661251-40658/root/chroot_tmpdir/scmroot/blender'...
$ git fetch origin ec14dd2b46721ef7c0951c9dc2a4bb7f15a162ed:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/blender
 * [new ref]         ec14dd2b46721ef7c0951c9dc2a4bb7f15a162ed -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ec14dd2 Merge branch 'rawhide' into f39