$ git clone -n https://src.fedoraproject.org/rpms/rubygem-em-socksify.git /var/lib/mock/f40-build-2322639-58672/root/chroot_tmpdir/scmroot/rubygem-em-socksify
Cloning into '/var/lib/mock/f40-build-2322639-58672/root/chroot_tmpdir/scmroot/rubygem-em-socksify'...
$ git fetch origin 3e282b1f58b49e8d701b0f336d3dcd9dfdeec704:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-em-socksify
 * [new ref]         3e282b1f58b49e8d701b0f336d3dcd9dfdeec704 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3e282b1 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild