$ git clone -n https://src.fedoraproject.org/rpms/R-cliapp.git /var/lib/mock/f39-build-1654208-40519/root/chroot_tmpdir/scmroot/R-cliapp
Cloning into '/var/lib/mock/f39-build-1654208-40519/root/chroot_tmpdir/scmroot/R-cliapp'...
$ git fetch origin 2294a24c0e4618dbf703fca7d235781ca699da89:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-cliapp
 * [new ref]         2294a24c0e4618dbf703fca7d235781ca699da89 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2294a24 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild