$ git clone -n https://src.fedoraproject.org/rpms/libkcapi.git /var/lib/mock/f41-build-side-1-2820691-33177/root/chroot_tmpdir/scmroot/libkcapi
Cloning into '/var/lib/mock/f41-build-side-1-2820691-33177/root/chroot_tmpdir/scmroot/libkcapi'...
$ git fetch origin 406ea0357f8d19527b827de7b08e37ec366aabc6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libkcapi
 * [new ref]         406ea0357f8d19527b827de7b08e37ec366aabc6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 406ea03 Do not ship duplicate kcapi-hasher in libkcapi-tools