$ git clone -n https://src.fedoraproject.org/rpms/ghc-cmdargs.git /var/lib/mock/f38-build-side-42-init-devel-866214-28439/root/chroot_tmpdir/scmroot/ghc-cmdargs
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-866214-28439/root/chroot_tmpdir/scmroot/ghc-cmdargs'...
$ git fetch origin a99f3cfe1637c53f9e533b58aab639f959101810:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-cmdargs
 * [new ref]         a99f3cfe1637c53f9e533b58aab639f959101810 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a99f3cf Convert to %autorelease and %autochangelog