$ git clone -n https://src.fedoraproject.org/rpms/R-rprintf.git /var/lib/mock/f38-build-side-42-init-devel-970443-28812/root/chroot_tmpdir/scmroot/R-rprintf
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-970443-28812/root/chroot_tmpdir/scmroot/R-rprintf'...
$ git fetch origin 3f242ae04911b7afd844c4b27b7824e6b4baa0a9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-rprintf
 * [new ref]         3f242ae04911b7afd844c4b27b7824e6b4baa0a9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3f242ae Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild