$ git clone -n https://src.fedoraproject.org/rpms/python-sphinx-tabs.git /var/lib/mock/f40-build-2029979-47504/root/chroot_tmpdir/scmroot/python-sphinx-tabs
Cloning into '/var/lib/mock/f40-build-2029979-47504/root/chroot_tmpdir/scmroot/python-sphinx-tabs'...
$ git fetch origin 98e89b4ac6d3e5d9d1a37ec4ea24f0acc0c834e0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-sphinx-tabs
 * [new ref]         98e89b4ac6d3e5d9d1a37ec4ea24f0acc0c834e0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 98e89b4 Update to 3.4.4.