$ git clone -n https://src.fedoraproject.org/rpms/ccgo.git /var/lib/mock/f45-build-4788-334/root/chroot_tmpdir/scmroot/ccgo
Cloning into '/var/lib/mock/f45-build-4788-334/root/chroot_tmpdir/scmroot/ccgo'...
$ git fetch origin 3aacda6855e12a9c40b88f9ec67c6c09f4d90efe:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ccgo
 * [new ref]         3aacda6855e12a9c40b88f9ec67c6c09f4d90efe -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3aacda6 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild