$ git clone -n https://src.fedoraproject.org/rpms/qgis.git /var/lib/mock/f41-build-61202429-6589437/root/chroot_tmpdir/scmroot/qgis
Cloning into '/var/lib/mock/f41-build-61202429-6589437/root/chroot_tmpdir/scmroot/qgis'...
$ git fetch origin 13a04c2ce1cb1439f55e3cbd15401d5b01b989bd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qgis
 * [new ref]         13a04c2ce1cb1439f55e3cbd15401d5b01b989bd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 13a04c2 Update to 3.40.9