$ git clone -n https://src.fedoraproject.org/rpms/rubygem-bundler_ext.git /var/lib/mock/f39-build-2141528-50845/root/chroot_tmpdir/scmroot/rubygem-bundler_ext
Cloning into '/var/lib/mock/f39-build-2141528-50845/root/chroot_tmpdir/scmroot/rubygem-bundler_ext'...
$ git fetch origin 93ed291a78a5e0535ef1dbd7c4e01ece27473ba0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-bundler_ext
 * [new ref]         93ed291a78a5e0535ef1dbd7c4e01ece27473ba0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 93ed291 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild