$ git clone -n https://src.fedoraproject.org/rpms/golang-github-planetscale-pargzip.git /var/lib/mock/f41-build-1068305-19636/root/chroot_tmpdir/scmroot/golang-github-planetscale-pargzip
Cloning into '/var/lib/mock/f41-build-1068305-19636/root/chroot_tmpdir/scmroot/golang-github-planetscale-pargzip'...
$ git fetch origin c2ef2bbbc062b497a5883b6638c6393c57ee6b87:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-planetscale-pargzip
 * [new ref]         c2ef2bbbc062b497a5883b6638c6393c57ee6b87 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c2ef2bb Fix FTBFS