$ git clone -n https://src.fedoraproject.org/rpms/rubygem-rspec-mocks.git /var/lib/mock/f39-build-1675185-40914/root/chroot_tmpdir/scmroot/rubygem-rspec-mocks
Cloning into '/var/lib/mock/f39-build-1675185-40914/root/chroot_tmpdir/scmroot/rubygem-rspec-mocks'...
$ git fetch origin cf6a009f483f45651052b997e4c53f1cd2f66625:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-rspec-mocks
 * [new ref]         cf6a009f483f45651052b997e4c53f1cd2f66625 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cf6a009 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild