$ git clone -n https://src.fedoraproject.org/rpms/R-here.git /var/lib/mock/f39-build-1570394-37765/root/chroot_tmpdir/scmroot/R-here
Cloning into '/var/lib/mock/f39-build-1570394-37765/root/chroot_tmpdir/scmroot/R-here'...
$ git fetch origin c525b2d6014b53df494e27eda2e47aedb6833340:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-here
 * [new ref]         c525b2d6014b53df494e27eda2e47aedb6833340 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c525b2d Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild