$ git clone -n https://src.fedoraproject.org/rpms/rubygem-actioncable.git /var/lib/mock/f42-build-3457992-45512/root/chroot_tmpdir/scmroot/rubygem-actioncable
Cloning into '/var/lib/mock/f42-build-3457992-45512/root/chroot_tmpdir/scmroot/rubygem-actioncable'...
$ git fetch origin 3dfb0544bb060c53a6ee5c34811bdbd8bf0a2bce:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-actioncable
 * [new ref]         3dfb0544bb060c53a6ee5c34811bdbd8bf0a2bce -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3dfb054 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild