$ git clone -n https://src.fedoraproject.org/rpms/ghc-base-compat.git /var/lib/mock/f45-build-9997-412/root/chroot_tmpdir/scmroot/ghc-base-compat
Cloning into '/var/lib/mock/f45-build-9997-412/root/chroot_tmpdir/scmroot/ghc-base-compat'...
$ git fetch origin 3b12ccda110f0d7f0dfafc354729ef52b8eb5b1f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-base-compat
 * [new ref]         3b12ccda110f0d7f0dfafc354729ef52b8eb5b1f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3b12ccd Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild