$ git clone -n https://src.fedoraproject.org/rpms/python-sqlalchemy.git /var/lib/mock/f41-build-848439-164429/root/chroot_tmpdir/scmroot/python-sqlalchemy
Cloning into '/var/lib/mock/f41-build-848439-164429/root/chroot_tmpdir/scmroot/python-sqlalchemy'...
$ git fetch origin 871e5dd7007f3280736b378b832248e46206ffb8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-sqlalchemy
 * [new ref]         871e5dd7007f3280736b378b832248e46206ffb8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 871e5dd Update to 2.0.34