$ git clone -n https://src.fedoraproject.org/rpms/gns3-gui.git /var/lib/mock/f40-build-1463737-23594/root/chroot_tmpdir/scmroot/gns3-gui
Cloning into '/var/lib/mock/f40-build-1463737-23594/root/chroot_tmpdir/scmroot/gns3-gui'...
$ git fetch origin 9073d6d15dba7be71dd50124d215b5a55480f1dc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gns3-gui
 * [new ref]         9073d6d15dba7be71dd50124d215b5a55480f1dc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9073d6d Update to 2.2.48