$ git clone -n https://src.fedoraproject.org/rpms/timg.git /var/lib/mock/f41-build-856080-167438/root/chroot_tmpdir/scmroot/timg
Cloning into '/var/lib/mock/f41-build-856080-167438/root/chroot_tmpdir/scmroot/timg'...
$ git fetch origin c006afbf16b3aff565d940fcd226d0abf5c68a8b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/timg
 * [new ref]         c006afbf16b3aff565d940fcd226d0abf5c68a8b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c006afb Rebuild for ffmpeg 7