$ git clone -n https://src.fedoraproject.org/rpms/kdesdk-thumbnailers.git /var/lib/mock/f40-build-1503993-23882/root/chroot_tmpdir/scmroot/kdesdk-thumbnailers
Cloning into '/var/lib/mock/f40-build-1503993-23882/root/chroot_tmpdir/scmroot/kdesdk-thumbnailers'...
$ git fetch origin 4dd64555a855743b33a611c383e9cf3cba492417:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kdesdk-thumbnailers
 * [new ref]         4dd64555a855743b33a611c383e9cf3cba492417 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4dd6455 24.05.0