$ git clone -n https://src.fedoraproject.org/rpms/rubygem-jekyll.git /var/lib/mock/f40-build-2639221-66343/root/chroot_tmpdir/scmroot/rubygem-jekyll
Cloning into '/var/lib/mock/f40-build-2639221-66343/root/chroot_tmpdir/scmroot/rubygem-jekyll'...
$ git fetch origin 30613fbb8fe1e4e8644c2a26b2817db16c219064:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-jekyll
 * [new ref]         30613fbb8fe1e4e8644c2a26b2817db16c219064 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 30613fb Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild