$ git clone -n https://src.fedoraproject.org/rpms/gns3-server.git /var/lib/mock/f39-build-1560570-37340/root/chroot_tmpdir/scmroot/gns3-server
Cloning into '/var/lib/mock/f39-build-1560570-37340/root/chroot_tmpdir/scmroot/gns3-server'...
$ git fetch origin f52b1024ec64cecc49754584c3cfc041618261ed:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gns3-server
 * [new ref]         f52b1024ec64cecc49754584c3cfc041618261ed -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f52b102 Remove sed importlib-resources