$ git clone -n https://src.fedoraproject.org/rpms/kchmviewer.git /var/lib/mock/f38-build-side-42-init-devel-714510-27288/root/chroot_tmpdir/scmroot/kchmviewer
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-714510-27288/root/chroot_tmpdir/scmroot/kchmviewer'...
$ git fetch origin 692f98fc6099987a86f8ae368b56d38b4d01c049:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kchmviewer
 * [new ref]         692f98fc6099987a86f8ae368b56d38b4d01c049 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 692f98f Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild