$ git clone -n https://src.fedoraproject.org/rpms/ghc-http-api-data.git /var/lib/mock/f45-build-52256-908/root/chroot_tmpdir/scmroot/ghc-http-api-data
Cloning into '/var/lib/mock/f45-build-52256-908/root/chroot_tmpdir/scmroot/ghc-http-api-data'...
$ git fetch origin e9348a15cf29b8a56323cd168b117bde383514d2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-http-api-data
 * [new ref]         e9348a15cf29b8a56323cd168b117bde383514d2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e9348a1 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild