$ git clone -n https://src.fedoraproject.org/rpms/libreoffice.git /var/lib/mock/f41-build-side-1-2956455-35553/root/chroot_tmpdir/scmroot/libreoffice
Cloning into '/var/lib/mock/f41-build-side-1-2956455-35553/root/chroot_tmpdir/scmroot/libreoffice'...
$ git fetch origin 87a577baf89626110180c7bf3af0c95619d846ea:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libreoffice
 * [new ref]         87a577baf89626110180c7bf3af0c95619d846ea -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 87a577b Enable Georgian langpack