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jbranchaud
34 lines
1.1 KiB
Markdown
34 lines
1.1 KiB
Markdown
# Programmatically Grab SHA For Head Commit
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When I use `gh browse path/to/some-file.txt`, it opens the browser to that file
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in GitHub. However, it targets the default branch (`main`) by default which is
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not very useful as a permalink because what that file looks like on `main` is
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liable to change.
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There is a `--commit` flag you can use to have it instead open to that file at a
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specific commit SHA.
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So what SHA do I pass as an argument to that flag?
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Often what I would like to grab is a reference to the current version of the
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file which is whatever it looks like for the `HEAD` commit. But `HEAD` is
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another moving target reference. The `git rev-parse` command can translate
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`HEAD` into a specific SHA though.
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```bash
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❯ git rev-parse --short HEAD
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3402428
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❯ git rev-parse HEAD
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3402428aadc02cfdc9825c8feb593443e72f50cd
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```
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Either of those will work. I can use a bash command substitution then to tie it
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all together into a single command:
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```bash
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❯ gh browse path/to/some-file.txt --commit=$(git rev-parse --short HEAD)
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```
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See `man git-rev-parse` for more details.
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