$ git clone -n https://src.fedoraproject.org/rpms/xxkb.git /var/lib/mock/f40-build-788443-135157/root/chroot_tmpdir/scmroot/xxkb
Cloning into '/var/lib/mock/f40-build-788443-135157/root/chroot_tmpdir/scmroot/xxkb'...
$ git fetch origin 15768ff2b5e5dc9f50ccfd30ce3817675eff1df7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xxkb
 * [new ref]         15768ff2b5e5dc9f50ccfd30ce3817675eff1df7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 15768ff Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild