$ git clone -n https://src.fedoraproject.org/rpms/f24-backgrounds.git /var/lib/mock/f41-build-749645-13378/root/chroot_tmpdir/scmroot/f24-backgrounds
Cloning into '/var/lib/mock/f41-build-749645-13378/root/chroot_tmpdir/scmroot/f24-backgrounds'...
$ git fetch origin e8fbc9e3dbfadb5c0816ffebc19ba1c217302372:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/f24-backgrounds
 * [new ref]         e8fbc9e3dbfadb5c0816ffebc19ba1c217302372 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e8fbc9e Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild