$ git clone -n https://src.fedoraproject.org/rpms/ghc-http-directory.git /var/lib/mock/f41-build-side-1-2805288-32863/root/chroot_tmpdir/scmroot/ghc-http-directory
Cloning into '/var/lib/mock/f41-build-side-1-2805288-32863/root/chroot_tmpdir/scmroot/ghc-http-directory'...
$ git fetch origin 2b4e65aebdb0f68a43a9e00b21cfe60b1c440ef7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-http-directory
 * [new ref]         2b4e65aebdb0f68a43a9e00b21cfe60b1c440ef7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2b4e65a bump release