$ git clone -n https://src.fedoraproject.org/rpms/kdegraphics-thumbnailers.git /var/lib/mock/f38-build-727467-100757/root/chroot_tmpdir/scmroot/kdegraphics-thumbnailers
Cloning into '/var/lib/mock/f38-build-727467-100757/root/chroot_tmpdir/scmroot/kdegraphics-thumbnailers'...
$ git fetch origin 1ab251b87adbd317777e013f7f649f51f5bb3b71:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kdegraphics-thumbnailers
 * [new ref]         1ab251b87adbd317777e013f7f649f51f5bb3b71 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1ab251b 23.04.2