$ git clone -n https://src.fedoraproject.org/rpms/cjson.git /var/lib/mock/f42-build-869056-176426/root/chroot_tmpdir/scmroot/cjson
Cloning into '/var/lib/mock/f42-build-869056-176426/root/chroot_tmpdir/scmroot/cjson'...
$ git fetch origin f5f6b4979c386c1aaaf1ff0c20750307691253eb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cjson
 * [new ref]         f5f6b4979c386c1aaaf1ff0c20750307691253eb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f5f6b49 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild