$ git clone -n https://src.fedoraproject.org/rpms/kdegraphics-thumbnailers.git /var/lib/mock/f40-build-2075974-49522/root/chroot_tmpdir/scmroot/kdegraphics-thumbnailers
Cloning into '/var/lib/mock/f40-build-2075974-49522/root/chroot_tmpdir/scmroot/kdegraphics-thumbnailers'...
$ git fetch origin 33c64f5972ed5ed5676dde8a2e707cb0d4a65ec1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kdegraphics-thumbnailers
 * [new ref]         33c64f5972ed5ed5676dde8a2e707cb0d4a65ec1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 33c64f5 23.08.2