$ git clone -n https://src.fedoraproject.org/rpms/ast.git /var/lib/mock/f31-build-53801-27905/root/chroot_tmpdir/scmroot/ast
Cloning into '/var/lib/mock/f31-build-53801-27905/root/chroot_tmpdir/scmroot/ast'...
$ git reset --hard b643564e50c559a33ed6db834ac65223a0072aa7
HEAD is now at b643564 Update to 8.7.1