$ git clone -n https://src.fedoraproject.org/rpms/ghc-HStringTemplate.git /var/lib/mock/f38-build-side-42-init-devel-841762-28412/root/chroot_tmpdir/scmroot/ghc-HStringTemplate
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-841762-28412/root/chroot_tmpdir/scmroot/ghc-HStringTemplate'...
$ git fetch origin 0960cd407520d51f2fc2f0a1fbc7b0b294ee323c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-HStringTemplate
 * [new ref]         0960cd407520d51f2fc2f0a1fbc7b0b294ee323c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0960cd4 Convert to %autorelease and %autochangelog