$ git clone -n https://src.fedoraproject.org/rpms/rubygem-httpclient.git /var/lib/mock/f39-build-1499332-34744/root/chroot_tmpdir/scmroot/rubygem-httpclient
Cloning into '/var/lib/mock/f39-build-1499332-34744/root/chroot_tmpdir/scmroot/rubygem-httpclient'...
$ git fetch origin 9e4eb6a3fcdc97dd4039303ea4a4b65cb13fd15c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-httpclient
 * [new ref]         9e4eb6a3fcdc97dd4039303ea4a4b65cb13fd15c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9e4eb6a Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild