$ git clone -n https://src.fedoraproject.org/rpms/ghc-regex-compat.git /var/lib/mock/f45-build-10675-419/root/chroot_tmpdir/scmroot/ghc-regex-compat
Cloning into '/var/lib/mock/f45-build-10675-419/root/chroot_tmpdir/scmroot/ghc-regex-compat'...
$ git fetch origin d9acf7fbfcbdd9a89d372b4aabc933ae0bf7d203:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-regex-compat
 * [new ref]         d9acf7fbfcbdd9a89d372b4aabc933ae0bf7d203 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d9acf7f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild