$ git clone -n https://src.fedoraproject.org/rpms/re2.git /var/lib/mock/f40-build-789070-135506/root/chroot_tmpdir/scmroot/re2
Cloning into '/var/lib/mock/f40-build-789070-135506/root/chroot_tmpdir/scmroot/re2'...
$ git fetch origin 5669b092efce6aeaeef6bc7a2cb40d0a3e72c3fe:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/re2
 * [new ref]         5669b092efce6aeaeef6bc7a2cb40d0a3e72c3fe -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5669b09 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild