$ git clone -n https://src.fedoraproject.org/rpms/rust-proc-macro-crate.git /var/lib/mock/f37-build-side-31-rust-devel-135739-8192/root/chroot_tmpdir/scmroot/rust-proc-macro-crate
Cloning into '/var/lib/mock/f37-build-side-31-rust-devel-135739-8192/root/chroot_tmpdir/scmroot/rust-proc-macro-crate'...
$ git reset --hard d74a5643aaf4d1e46e51ae2b887bf847c76232eb
HEAD is now at d74a564 Update to version 1.2.1; Fixes RHBZ#2116470