$ git clone -n https://src.fedoraproject.org/rpms/cairomm.git /var/lib/mock/f40-build-2336402-59445/root/chroot_tmpdir/scmroot/cairomm
Cloning into '/var/lib/mock/f40-build-2336402-59445/root/chroot_tmpdir/scmroot/cairomm'...
$ git fetch origin 3d2c72dadd10c2722a692548cdca59633c88a2af:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cairomm
 * [new ref]         3d2c72dadd10c2722a692548cdca59633c88a2af -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3d2c72d Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild