$ git clone -n https://src.fedoraproject.org/rpms/hyphen-ca.git /var/lib/mock/f42-build-3282737-41399/root/chroot_tmpdir/scmroot/hyphen-ca
Cloning into '/var/lib/mock/f42-build-3282737-41399/root/chroot_tmpdir/scmroot/hyphen-ca'...
$ git fetch origin bb907e52a2ea2fcbf22a51bcbc9f9fc44498fea1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/hyphen-ca
 * [new ref]         bb907e52a2ea2fcbf22a51bcbc9f9fc44498fea1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bb907e5 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild