before /nix/store/vmr8ny2pwaa6jdnrq14yml0b58cbs0xi-gmrender-resurrect-0.0.8      813998272
after  /nix/store/m8vmfyly18zx3wzx881fmhx7v2wkvqgc-gmrender-resurrect-0.0.8      813999408

$ nixpkgs-review pr 99899
$ git -c fetch.prune=false fetch --force https://github.com/NixOS/nixpkgs master:refs/nixpkgs-review/0 pull/99899/head:refs/nixpkgs-review/1
remote: Enumerating objects: 59, done.
remote: Counting objects: 100% (59/59), done.
remote: Total 101 (delta 59), reused 59 (delta 59), pack-reused 42
Receiving objects: 100% (101/101), 190.48 KiB | 241.00 KiB/s, done.
Resolving deltas: 100% (72/72), completed with 50 local objects.
From https://github.com/NixOS/nixpkgs
   0093e4e6a99..9ae60c87474  master               -> refs/nixpkgs-review/0
 + 024ad57ed18...98e5369bafa refs/pull/99899/head -> refs/nixpkgs-review/1  (forced update)
$ git worktree add /home/tony/.cache/nixpkgs-review/pr-99899/nixpkgs 9ae60c874749f2bdbfb1ffb1249621f050410ad7
Preparing worktree (detached HEAD 9ae60c87474)
Updating files: 100% (22850/22850), done.
HEAD is now at 9ae60c87474 act: build with go 1.15 on darwin
$ git merge --no-commit 98e5369bafacf919982813d86e5dc99095d5d3d0
Automatic merge went well; stopped before committing as requested
$ nix build --no-link --keep-going --option build-use-sandbox relaxed -f /home/tony/.cache/nixpkgs-review/pr-99899/build.nix
building '/nix/store/97ijw7dfydq4npnv8hc6b13fdvm72hl4-env.drv'...
[1 built, 0.0 MiB DL]
https://github.com/NixOS/nixpkgs/pull/99899
1 package built:
gmrender-resurrect

$ nix-shell /home/tony/.cache/nixpkgs-review/pr-99899/shell.nix

[nix-shell:~/.cache/nixpkgs-review/pr-99899]$ exit
$ git worktree prune