$ git clone -n https://src.fedoraproject.org/rpms/gi-docgen.git /var/lib/mock/f42-build-3275565-41321/root/chroot_tmpdir/scmroot/gi-docgen
Cloning into '/var/lib/mock/f42-build-3275565-41321/root/chroot_tmpdir/scmroot/gi-docgen'...
$ git fetch origin 4d4f46bbb930c78b173e68c926165570496015d0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gi-docgen
 * [new ref]         4d4f46bbb930c78b173e68c926165570496015d0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4d4f46b Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild