$ git clone -n https://src.fedoraproject.org/rpms/R-timechange.git /var/lib/mock/f38-build-723996-99307/root/chroot_tmpdir/scmroot/R-timechange
Cloning into '/var/lib/mock/f38-build-723996-99307/root/chroot_tmpdir/scmroot/R-timechange'...
$ git reset --hard 9400f1fbf8730fde5ce1fa47c5d0d6533e715ba0
HEAD is now at 9400f1f R-maint-sig mass rebuild