$ git clone -n https://src.fedoraproject.org/rpms/kitty.git /var/lib/mock/f42-build-3355535-45025/root/chroot_tmpdir/scmroot/kitty
Cloning into '/var/lib/mock/f42-build-3355535-45025/root/chroot_tmpdir/scmroot/kitty'...
$ git fetch origin d90c92c04fc5b84ec650835e715dfd900b11c80b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kitty
 * [new ref]         d90c92c04fc5b84ec650835e715dfd900b11c80b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d90c92c Don't run tests on unsupported arches upstream