$ git clone -n https://src.fedoraproject.org/rpms/ghc-old-locale.git /var/lib/mock/f40-build-742261-110680/root/chroot_tmpdir/scmroot/ghc-old-locale
Cloning into '/var/lib/mock/f40-build-742261-110680/root/chroot_tmpdir/scmroot/ghc-old-locale'...
$ git fetch origin f7064148cbcfb228ebc5859acf9a0058916694ac:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-old-locale
 * [new ref]         f7064148cbcfb228ebc5859acf9a0058916694ac -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f706414 bump release