$ git clone -n https://src.fedoraproject.org/rpms/gi-docgen.git /var/lib/mock/f39-build-1870162-42648/root/chroot_tmpdir/scmroot/gi-docgen
Cloning into '/var/lib/mock/f39-build-1870162-42648/root/chroot_tmpdir/scmroot/gi-docgen'...
$ git fetch origin 4040705522bfba9c6c777bbfd5f80c46db92dafb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gi-docgen
 * [new ref]         4040705522bfba9c6c777bbfd5f80c46db92dafb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4040705 Update to 2023.3 (close RHBZ#2251397)