$ git clone -n https://src.fedoraproject.org/rpms/rubygem-bundler_ext.git /var/lib/mock/f42-build-3458067-45512/root/chroot_tmpdir/scmroot/rubygem-bundler_ext
Cloning into '/var/lib/mock/f42-build-3458067-45512/root/chroot_tmpdir/scmroot/rubygem-bundler_ext'...
$ git fetch origin be280a320d7170bc7671580c0f50e18003ed1528:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-bundler_ext
 * [new ref]         be280a320d7170bc7671580c0f50e18003ed1528 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at be280a3 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild