$ git clone -n https://src.fedoraproject.org/rpms/weston.git /var/lib/mock/f45-build-38329-723/root/chroot_tmpdir/scmroot/weston
Cloning into '/var/lib/mock/f45-build-38329-723/root/chroot_tmpdir/scmroot/weston'...
$ git fetch origin 94c290d5df0f2a843be2ead99dbc9dac4fcdfdaa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/weston
 * [new ref]         94c290d5df0f2a843be2ead99dbc9dac4fcdfdaa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 94c290d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild