$ git clone -n https://src.fedoraproject.org/rpms/R-gtools.git /var/lib/mock/f40-build-789466-135730/root/chroot_tmpdir/scmroot/R-gtools
Cloning into '/var/lib/mock/f40-build-789466-135730/root/chroot_tmpdir/scmroot/R-gtools'...
$ git fetch origin 8391dba999df598aa8fa4b3bf2b932bda426fcee:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-gtools
 * [new ref]         8391dba999df598aa8fa4b3bf2b932bda426fcee -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8391dba Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild