$ git clone -n https://src.fedoraproject.org/rpms/R-Cairo.git /var/lib/mock/f42-build-3264331-41244/root/chroot_tmpdir/scmroot/R-Cairo
Cloning into '/var/lib/mock/f42-build-3264331-41244/root/chroot_tmpdir/scmroot/R-Cairo'...
$ git fetch origin 4d6baaf994630ff2520de572637707a15057bcaa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-Cairo
 * [new ref]         4d6baaf994630ff2520de572637707a15057bcaa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4d6baaf Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild