$ git clone -n https://src.fedoraproject.org/rpms/R-gmp.git /var/lib/mock/f38-build-723870-99307/root/chroot_tmpdir/scmroot/R-gmp
Cloning into '/var/lib/mock/f38-build-723870-99307/root/chroot_tmpdir/scmroot/R-gmp'...
$ git reset --hard 2df730b00c09184e3af6d7277334fbef82f600ec
HEAD is now at 2df730b R-maint-sig mass rebuild