$ git clone -n https://src.fedoraproject.org/rpms/ghc-gi-atk.git /var/lib/mock/f45-build-10316-415/root/chroot_tmpdir/scmroot/ghc-gi-atk
Cloning into '/var/lib/mock/f45-build-10316-415/root/chroot_tmpdir/scmroot/ghc-gi-atk'...
$ git fetch origin cc62e3f4563eda4070f6158093c13b427172648f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-gi-atk
 * [new ref]         cc62e3f4563eda4070f6158093c13b427172648f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cc62e3f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild