$ git clone -n https://src.fedoraproject.org/rpms/python-plugincode.git /var/lib/mock/f39-build-2179274-51135/root/chroot_tmpdir/scmroot/python-plugincode
Cloning into '/var/lib/mock/f39-build-2179274-51135/root/chroot_tmpdir/scmroot/python-plugincode'...
$ git fetch origin 3b4d1704fd18af1a39a62492ce9590d5dd3d6395:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-plugincode
 * [new ref]         3b4d1704fd18af1a39a62492ce9590d5dd3d6395 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3b4d170 Initial import