$ git clone -n https://src.fedoraproject.org/rpms/ghc-http-streams.git /var/lib/mock/f38-build-side-42-init-devel-1090885-30049/root/chroot_tmpdir/scmroot/ghc-http-streams
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1090885-30049/root/chroot_tmpdir/scmroot/ghc-http-streams'...
$ git fetch origin 1114f242a70512310fa997827c0ddb008436e817:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-http-streams
 * [new ref]         1114f242a70512310fa997827c0ddb008436e817 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1114f24 Convert to %autorelease and %autochangelog