$ git clone -n https://src.fedoraproject.org/rpms/ghc-bower-json.git /var/lib/mock/f45-build-10051-412/root/chroot_tmpdir/scmroot/ghc-bower-json
Cloning into '/var/lib/mock/f45-build-10051-412/root/chroot_tmpdir/scmroot/ghc-bower-json'...
$ git fetch origin 1dd21e94f0099856d119e7d4a35ebc11860656af:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-bower-json
 * [new ref]         1dd21e94f0099856d119e7d4a35ebc11860656af -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1dd21e9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild