Hello,
I've got an observation for this bug. If ~/.config/git/config sets a default branch for new repositories other than "master", this bug is triggered. For instance, if I configure git to create repositories with "main" as default branch. # ~/.config/git/config [init] defaultBranch = main With this configuration, "dgit sbuild" gives me... ,---- | $ dgit sbuild | Format `3.0 (quilt)', need to check/update patch stack | examining quilt state (multiple patches, linear mode) | gzip: warning: GZIP environment variable is deprecated; use an alias or script | dgit: base trees orig=53be9ecc4e6ed6cbcea7 o+d/p=53be9ecc4e6ed6cbcea7 | dgit: quilt differences: src: == orig == gitignores: == orig == | dgit: quilt differences: HEAD == o+d/p HEAD == o+d/p | starting quiltify (multiple patches, linear mode) | quiltify linearisation planning successful, executing... | error: pathspec 'master' did not match any file(s) known to git | dgit: failed command: git checkout -q master | | dgit: error: subprocess failed with error exit status 1 | $ echo $? | 255 `---- Without this configuration, "dgit sbuild" gives me... ,---- | $ dgit sbuild | Format `3.0 (quilt)', need to check/update patch stack | examining quilt state (multiple patches, linear mode) | gzip: warning: GZIP environment variable is deprecated; use an alias or script | dgit: base trees orig=53be9ecc4e6ed6cbcea7 o+d/p=53be9ecc4e6ed6cbcea7 | dgit: quilt differences: src: == orig == gitignores: == orig == | dgit: quilt differences: HEAD == o+d/p HEAD == o+d/p | starting quiltify (multiple patches, linear mode) | quiltify linearisation planning successful, executing... | nothing quilty to commit, ok. | dpkg-source: info: using source format '3.0 (quilt)' | dpkg-source: info: building varnish-modules using existing ./varnish-modules_0.16.0.orig.tar.gz | dpkg-source: info: building varnish-modules in varnish-modules_0.16.0-3.debian.tar.xz | dpkg-source: info: building varnish-modules in varnish-modules_0.16.0-3.dsc | package seems new, not specifying -v<version> | dpkg-genchanges: info: not including original source code in upload | sbuild (Debian sbuild) 0.79.1 (22 April 2020) on turbotape.localdomain | [...] `---- -- Stig Sandbeck Mathisen Debian Developer