$ git clone -n https://src.fedoraproject.org/rpms/R-webfakes.git /var/lib/mock/f42-build-3338902-41426/root/chroot_tmpdir/scmroot/R-webfakes
Cloning into '/var/lib/mock/f42-build-3338902-41426/root/chroot_tmpdir/scmroot/R-webfakes'...
$ git fetch origin fb89cb47fd0227b5f2d3e00c73532178a99caa1b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-webfakes
 * [new ref]         fb89cb47fd0227b5f2d3e00c73532178a99caa1b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fb89cb4 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild