$ git clone -n https://src.fedoraproject.org/rpms/R-Cairo.git /var/lib/mock/f38-build-723908-99307/root/chroot_tmpdir/scmroot/R-Cairo
Cloning into '/var/lib/mock/f38-build-723908-99307/root/chroot_tmpdir/scmroot/R-Cairo'...
$ git reset --hard b1b572bb254a4b29f8dabbcc96e7091e6e62ba4c
HEAD is now at b1b572b R-maint-sig mass rebuild