$ git clone -n https://src.fedoraproject.org/rpms/kdegraphics-thumbnailers.git /var/lib/mock/f40-build-1904593-25073/root/chroot_tmpdir/scmroot/kdegraphics-thumbnailers
Cloning into '/var/lib/mock/f40-build-1904593-25073/root/chroot_tmpdir/scmroot/kdegraphics-thumbnailers'...
$ git fetch origin 9917a041e95df9a0e46194118ef30d8561a1245f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kdegraphics-thumbnailers
 * [new ref]         9917a041e95df9a0e46194118ef30d8561a1245f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9917a04 24.05.2