$ git clone -n https://src.fedoraproject.org/rpms/ghc-pureMD5.git /var/lib/mock/f45-build-10646-419/root/chroot_tmpdir/scmroot/ghc-pureMD5
Cloning into '/var/lib/mock/f45-build-10646-419/root/chroot_tmpdir/scmroot/ghc-pureMD5'...
$ git fetch origin e5e6aa672672c8e7dc4a3e9bbbd13dd796b64448:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-pureMD5
 * [new ref]         e5e6aa672672c8e7dc4a3e9bbbd13dd796b64448 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e5e6aa6 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild