[Rpm-maint] [rpm-software-management/rpm] wrong chroot/fchdir order to break out of chroot? (Issue #1884)

[Florian Festi]

As far as I understand this the working dir is set to `/` before entering the chroot in https://github.com/rpm-software-management/rpm/blob/4afe2d14d33db82ccb41c0a8d5eb1a4db90762fc/lib/rpmchroot.c#L134 . So `(chroot(".")` goes back to `/` (leaving the chroot) and `fchdir` changes the working dir back to the location of the chroot as seen from the outside system. So this seems to be correct to me.

Please feel free to re-open with more details about your particular OS if you want to work on getting this to work there.

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