$ git clone -n https://src.fedoraproject.org/rpms/weston.git /var/lib/mock/f39-build-2522441-61728/root/chroot_tmpdir/scmroot/weston
Cloning into '/var/lib/mock/f39-build-2522441-61728/root/chroot_tmpdir/scmroot/weston'...
$ git fetch origin 8c98c71e2c7da4f5fa31fcde68d6c2b74be1fe45:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/weston
 * [new ref]         8c98c71e2c7da4f5fa31fcde68d6c2b74be1fe45 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8c98c71 Update to 12.0.2