$ git clone -n https://src.fedoraproject.org/rpms/python-pgspecial.git /var/lib/mock/f39-build-1620843-38702/root/chroot_tmpdir/scmroot/python-pgspecial
Cloning into '/var/lib/mock/f39-build-1620843-38702/root/chroot_tmpdir/scmroot/python-pgspecial'...
$ git fetch origin e49abe4261cfb4bd585dc3522b3cc191049501f2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-pgspecial
 * [new ref]         e49abe4261cfb4bd585dc3522b3cc191049501f2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e49abe4 Update to 2.1.1 (close RHBZ#2246889)