$ git clone -n https://src.fedoraproject.org/rpms/python-pikepdf.git /var/lib/mock/f39-build-1948409-43205/root/chroot_tmpdir/scmroot/python-pikepdf
Cloning into '/var/lib/mock/f39-build-1948409-43205/root/chroot_tmpdir/scmroot/python-pikepdf'...
$ git fetch origin ba17f562258390f490715eddd3e4abdf367b0ebe:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-pikepdf
 * [new ref]         ba17f562258390f490715eddd3e4abdf367b0ebe -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ba17f56 Update to latest version (#2252626)