$ git clone -n https://src.fedoraproject.org/rpms/ghc-pretty-simple.git /var/lib/mock/f41-build-side-1-2883156-34500/root/chroot_tmpdir/scmroot/ghc-pretty-simple
Cloning into '/var/lib/mock/f41-build-side-1-2883156-34500/root/chroot_tmpdir/scmroot/ghc-pretty-simple'...
$ git fetch origin cd08bac439d473ba8d7b3f27ee69d217763be577:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-pretty-simple
 * [new ref]         cd08bac439d473ba8d7b3f27ee69d217763be577 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cd08bac bump release