$ git clone -n https://src.fedoraproject.org/rpms/rust-clang-sys.git /var/lib/mock/f37-build-side-31-rust-devel-111028-5914/root/chroot_tmpdir/scmroot/rust-clang-sys
Cloning into '/var/lib/mock/f37-build-side-31-rust-devel-111028-5914/root/chroot_tmpdir/scmroot/rust-clang-sys'...
$ git reset --hard 9c141d7293440e87b9c2e24955a22d9b792320d4
HEAD is now at 9c141d7 Update to version 1.4.0; Fixes RHBZ#2129037