$ git clone -n https://src.fedoraproject.org/rpms/python-dockerfile-parse.git /var/lib/mock/f39-build-1427896-31642/root/chroot_tmpdir/scmroot/python-dockerfile-parse
Cloning into '/var/lib/mock/f39-build-1427896-31642/root/chroot_tmpdir/scmroot/python-dockerfile-parse'...
$ git fetch origin 33f857d62d17b014c08a7182d321d29d28c38669:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-dockerfile-parse
 * [new ref]         33f857d62d17b014c08a7182d321d29d28c38669 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 33f857d Fix failure with unpacking tarball