$ git clone -n https://src.fedoraproject.org/rpms/ghc-MissingH.git /var/lib/mock/f38-build-side-42-init-devel-656411-26596/root/chroot_tmpdir/scmroot/ghc-MissingH
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-656411-26596/root/chroot_tmpdir/scmroot/ghc-MissingH'...
$ git fetch origin 85dbb29e16e9d5dd7412c181d8ed17843db4da0c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-MissingH
 * [new ref]         85dbb29e16e9d5dd7412c181d8ed17843db4da0c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 85dbb29 Convert to %autorelease and %autochangelog