$ git clone -n https://src.fedoraproject.org/rpms/ghc-hjsmin.git /var/lib/mock/f41-build-839419-160145/root/chroot_tmpdir/scmroot/ghc-hjsmin
Cloning into '/var/lib/mock/f41-build-839419-160145/root/chroot_tmpdir/scmroot/ghc-hjsmin'...
$ git fetch origin 9d9918d7f1926bc34343c31f7017b0292c40c176:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-hjsmin
 * [new ref]         9d9918d7f1926bc34343c31f7017b0292c40c176 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9d9918d bump release