$ git clone -n https://src.fedoraproject.org/rpms/rubygem-webmock.git /var/lib/mock/f40-build-2532571-61842/root/chroot_tmpdir/scmroot/rubygem-webmock
Cloning into '/var/lib/mock/f40-build-2532571-61842/root/chroot_tmpdir/scmroot/rubygem-webmock'...
$ git fetch origin a6a3fadff9d32539f17a4659e696c5bdf726022d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-webmock
 * [new ref]         a6a3fadff9d32539f17a4659e696c5bdf726022d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a6a3fad Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild