$ git clone -n https://src.fedoraproject.org/rpms/R-git2r.git /var/lib/mock/f41-build-820909-152382/root/chroot_tmpdir/scmroot/R-git2r
Cloning into '/var/lib/mock/f41-build-820909-152382/root/chroot_tmpdir/scmroot/R-git2r'...
$ git fetch origin ff98baca1c2c42a93ae62e9e03675eda47758d4a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-git2r
 * [new ref]         ff98baca1c2c42a93ae62e9e03675eda47758d4a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ff98bac Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild