$ git clone -n https://src.fedoraproject.org/rpms/R-chron.git /var/lib/mock/f33-build-502853-64335/root/chroot_tmpdir/scmroot/R-chron
Cloning into '/var/lib/mock/f33-build-502853-64335/root/chroot_tmpdir/scmroot/R-chron'...
$ git reset --hard 305652bff6aeee0d0e67d7eae1e1ed9dc28b2aea
HEAD is now at 305652b Update to latest version.