$ git clone -n https://src.fedoraproject.org/rpms/rubygem-puma.git /var/lib/mock/f42-build-3490715-45854/root/chroot_tmpdir/scmroot/rubygem-puma
Cloning into '/var/lib/mock/f42-build-3490715-45854/root/chroot_tmpdir/scmroot/rubygem-puma'...
$ git fetch origin e3c72d406b71774524f9c980cd9470f3236e9ca1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-puma
 * [new ref]         e3c72d406b71774524f9c980cd9470f3236e9ca1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e3c72d4 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild