Add the .git subdir as another safe.directory on Cygwin CI
#1845
| Job | Run time |
|---|---|
| 2m 35s | |
| 2m 30s | |
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| 2m 24s | |
| 2m 10s | |
| 2m 43s | |
| 4m 14s | |
| 3m 50s | |
| 4m 23s | |
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| 3m 25s | |
| 3m 46s | |
| 1m 41s | |
| 1m 38s | |
| 1m 37s | |
| 5m 51s | |
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| 5m 39s | |
| 7m 1s | |
| 5m 36s | |
| 5m 46s | |
| 1h 19m 27s |