Update to Git 2.34.0 breaks application

After an update from Git 2.25.1 to 2.34.0 the Java application that uses the Eclipse JGit library freezes.

Strace suggests that the JVM receives a SIGTTOU from the child process "git config --system --edit" created with java.lang.ProcessBuilder.

Upstream[1] has identified 3d411afa[2] as the possible commit that introduced the problem.

The problem does not occur on all Linux systems.

-Alex

Environment:
OS: Linux Mint 20
Kernel: 5.4.0-90-generic
Git 2.34.0 from http://ppa.launchpad.net/git-core/ppa/ubuntu
Java: OpenJDK 64-Bit Server VM AdoptOpenJDK (build 11.0.10+9, mixed mode)

Ref.: [1] https://bugs.eclipse.org/bugs/show_bug.cgi?id=577358 [2] https://github.com/git/git/commit/3d411afabc9a96f41d47c07d6af6edda3d29ec92#diff-01b59b6a71e42b9c1251ffbf76a1119b965be087a78538e80e01f9239c8e5880