$ git clone -n https://src.fedoraproject.org/rpms/R-igraph.git /var/lib/mock/f40-build-789470-135730/root/chroot_tmpdir/scmroot/R-igraph
Cloning into '/var/lib/mock/f40-build-789470-135730/root/chroot_tmpdir/scmroot/R-igraph'...
$ git fetch origin a3f295b77ec956623081ffeab2a143a728a7708e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-igraph
 * [new ref]         a3f295b77ec956623081ffeab2a143a728a7708e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a3f295b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild