$ git clone -n https://src.fedoraproject.org/rpms/rxvt-unicode.git /var/lib/mock/f40-build-799387-142276/root/chroot_tmpdir/scmroot/rxvt-unicode
Cloning into '/var/lib/mock/f40-build-799387-142276/root/chroot_tmpdir/scmroot/rxvt-unicode'...
$ git fetch origin ee3156c1ed1883c674ffa06a47904e5217c29af3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rxvt-unicode
 * [new ref]         ee3156c1ed1883c674ffa06a47904e5217c29af3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ee3156c Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild