$ git clone -n https://src.fedoraproject.org/rpms/weechat.git /var/lib/mock/f41-build-814637-149000/root/chroot_tmpdir/scmroot/weechat
Cloning into '/var/lib/mock/f41-build-814637-149000/root/chroot_tmpdir/scmroot/weechat'...
$ git fetch origin 29cd67e21b41321fea0e7e7d5c671c98f6ac4e4f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/weechat
 * [new ref]         29cd67e21b41321fea0e7e7d5c671c98f6ac4e4f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 29cd67e Update to 4.3.4