$ git clone -n https://src.fedoraproject.org/rpms/python-sqlalchemy.git /var/lib/mock/f42-build-874587-178946/root/chroot_tmpdir/scmroot/python-sqlalchemy
Cloning into '/var/lib/mock/f42-build-874587-178946/root/chroot_tmpdir/scmroot/python-sqlalchemy'...
$ git fetch origin ef20bef7eef36b234fb13006f57fab03431a9e26:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-sqlalchemy
 * [new ref]         ef20bef7eef36b234fb13006f57fab03431a9e26 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ef20bef Update to 2.0.38