$ git clone -n https://src.fedoraproject.org/rpms/rust-sd.git /var/lib/mock/f31-build-48847-27197/root/chroot_tmpdir/scmroot/rust-sd
Cloning into '/var/lib/mock/f31-build-48847-27197/root/chroot_tmpdir/scmroot/rust-sd'...
$ git reset --hard 75b21c36e7ca3f01ef5d082be19ed86441af2a00
HEAD is now at 75b21c3 Regenerate