$ git clone -n https://src.fedoraproject.org/rpms/R-RCurl.git /var/lib/mock/f40-build-789274-135700/root/chroot_tmpdir/scmroot/R-RCurl
Cloning into '/var/lib/mock/f40-build-789274-135700/root/chroot_tmpdir/scmroot/R-RCurl'...
$ git fetch origin 06bfc1dc1e282e48d132b1b9c04b3741a861a252:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-RCurl
 * [new ref]         06bfc1dc1e282e48d132b1b9c04b3741a861a252 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 06bfc1d Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild