$ git clone -n https://src.fedoraproject.org/rpms/rubygem-dnsruby.git /var/lib/mock/f39-build-1458210-33043/root/chroot_tmpdir/scmroot/rubygem-dnsruby
Cloning into '/var/lib/mock/f39-build-1458210-33043/root/chroot_tmpdir/scmroot/rubygem-dnsruby'...
$ git fetch origin f9274848acf1ac87fdd6874be95a97756cd31cab:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-dnsruby
 * [new ref]         f9274848acf1ac87fdd6874be95a97756cd31cab -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f927484 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild